Prevent SwipeRefreshLayout from intercepting while list can still scroll up

[chagaiB]

This PR fixes an issue where pull-to-refresh could trigger while the files list
was not at the top, causing an unexpected refresh and interrupting scrolling.

Implementation:

• Set a ChildScrollUpCallback on SwipeRefreshLayout to return true when the
  RecyclerView can still scroll up (canScrollVertically(-1) == true). This
  prevents SwipeRefreshLayout from intercepting gestures mid-list.

Fixes #15619.

1. Open the files list screen.
2. Scroll down so the list is not at the very top.
3. Drag using the scrollbar / or perform a slight pull gesture.
   Expected: no refresh is triggered; scrolling remains smooth.
4. Go back to the very top and pull down.
   Expected: pull-to-refresh triggers normally.

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[alperozturk96]

Hey, thank you for the PR. I can't test it. It is not building. swipeRefreshLayout not exists in the OCFileListFragment. You can use binding to access it.